No matter whether you are planning to celebrate an anniversary or pop the question to the love of your life, a 4 carat diamond ring would be the perfect way to express just how you feel. After all, it is only once in a lifetime that people save up the money to make such a big purchase on such a joyous occasion. That can give you an estimate about the four carat diamond ring price. Yet again, it is not as easy and absolute figure, since factors such as the 4 C’s of diamond and even the market trends influence a diamond ring’s price.